A differential anomalous x-ray scattering study and reverse monte carlo simulation of a highly concentrated solution of zinc bromide in water
✍ Scribed by H. Bertagnolli; H. Zweier; T. Mager
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 696 KB
- Volume
- 73-74
- Category
- Article
- ISSN
- 0167-7322
No coin nor oath required. For personal study only.
✦ Synopsis
A differential anomalous X-ray scattering (DAS) study of the structure of a highly concentrated aqueous solution of zinc bromide (19.5 molal) is presented. Synchrotron radiation was used for four diffraction experiments at photon energies of 12500 eV, 13462 eV (Br-K-edge) and 9000 eV, 9650 eV (Zn-K-edge).
The dispersion corrections were calculated from the photoabsorption coefficients determined by absorption experiments. The diff'erential structure factor and its Fourier transform. the differential atom pair correlation function, were obtained after an intricate data evaluation procedure
The technique of the Reverse Monte Carlo simulation, which requires no intermolecular potential as input, was used to elucidate the microscopic structure of zinc bromide solution, which resembles the crystal structure of ZnBr,.HzO, in which the zinc ion is coordinated tetrahedrally with two bromine ions and two water molecules